I have been trying to play sounds on CS, but without using a mic, but I don't know how. The only sounds I can play are the ones that come with the game. Is there anyway to import sounds into the .gcf so I can play them or is there a simpler way that I just can't find?

Hi guys I have problem with launching starwars the force unleashed with it:
"Error writing C:\Users\Mateusz\AppData\Local\Temp\SWTFU.exe (Error: NCF files are indexes and do not contain any file data.)" , its weird could you add me on steam (my login is: meuron) and help me?